环境空气质量标准修订，专家：尽快加严标准限值并分区域推进达标

Core Insights - The Asian Clean Air Center held the 2025 China Blue Sky Observation Forum, releasing a report on air quality standards in collaboration with Tsinghua University and Peking University [1] - The proposed revision of the air quality standard suggests a new PM2.5 annual concentration limit of 25 micrograms per cubic meter, which aligns with the WHO's second phase transition target [2] - The current air quality standard, implemented in 2016, has seen over 70% of cities meeting the PM2.5 standard, indicating a need for an updated benchmark [1][2] Group 1: Current Standards and Proposed Changes - The existing PM2.5 annual concentration limit is set at 35 micrograms per cubic meter, which corresponds to the initial WHO guideline [1] - The new proposed standard of 25 micrograms per cubic meter aims to enhance health benefits and further improve air quality [2] - The revision process considers China's development stage, resource endowment, and environmental capacity [1] Group 2: Health and Economic Implications - Implementing stricter air quality standards is expected to drive industrial structure optimization and energy transition, despite potential short-term economic pressures [3] - The ecological environment department has made positive progress in evaluating the implementation of air quality standards and their health impacts [3] - The approach to revising standards will focus on a balanced strategy, avoiding extreme measures while ensuring local governments can meet the new targets [3]